SKIN
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the parts of the integumentary system? | Skin, hair, nails, sweat glands, and sebaceous glands
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| What are the three layers of skin? | Epidermis, dermis, and subcutaneous layer
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| What is a 1st degree burn? | Skin reddened and painful; no blisters; epidermis is damaged
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| What is a 2nd degree burn? | Skin reddened and painful; both epidermis and dermis are damaged
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| What is a 3rd degree burn? | Charred; epidermis and dermis are burned away; subcutaneous layer is exposed
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| What are the functions of the integumentary system? | Two-way protective barrier, temperature regulation, houses sensory receptors, and secretes important fluids
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| What is the largest organ in the body, and how much does it weigh? | Skin, and more than 20 lbs (in adults)
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| Skin is also called...? | Integument, and Cutaneous membrane
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| Sensory receptors are located in...? | Middle layer - Dermis
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| What do sensory receptors detect? | Temperature, pain, touch, and pressure
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| Sweat glands...? | 1) Assists body in maintaining internal temperature
2) Create cooling effect when sweat evaporates
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| Sebaceous glands...? | 1) Oil glands
2) Produce sebum
3) Lubricates the skin surface
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| Temperature regulation 1 To cool skin...? | 1) Sweat evaporation
2) Dilate superficial blood vessels to release heat
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| Temperature regulation 2 To conserve heat...? | 1) Constrict superficial blood vessels to keep warm blood away from surface
2)Continuous fat layer acts as insulation
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| Epidermis | Thin outer membrane layer, and composed of stratified squamos epithelium
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| Dermis | Middle, fibrous connective tissue layer, and composed of collagen fibers (also known as "corium")
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| Subcutaneous Layer | Innermost layer of fatty tissue and fat cells called lipocytes (also known as "fascia" or "hypodermis")
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| What is the Basal layer? | The deepest layer of the epidermis
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| What are Melanocytes? | Special cells or basal layer, and produce black pigment melanin
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| What do Melanocytes do? | 1) Protects against UV rays from the sun
2) Gives skin its color
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| Hair is made up of...? | Hair follicle, hair root, hair shaft, arrector pili muscle
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| What is the arrector pili? | 1) Slip of smooth muscle
2) Causes hairs to "stand up"
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| Nails are made up of...? | Nail body (flat bed of keratin), nail bed (connects nail body to underlying tissue), and lunula (half-moon white area at base of nail)
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